CN220921979U

CN220921979U - Grinding clamping and fixing system

Info

Publication number: CN220921979U
Application number: CN202322731235.5U
Authority: CN
Inventors: 张云彦; 宋勇; 张帆
Original assignee: Chongqing Heshi Intelligent Technology Co ltd
Current assignee: Chongqing Heshi Intelligent Technology Co ltd
Priority date: 2023-10-11
Filing date: 2023-10-11
Publication date: 2024-05-10
Anticipated expiration: 2033-10-11

Abstract

The utility model discloses a grinding clamping and fixing system, which comprises: the two step material moving mechanisms are arranged in a head-to-tail communication way; the middle part of the step material moving mechanism is provided with a through notch; the two jacking mechanisms are respectively arranged right below the two step material moving mechanisms; the lifting arm of the jacking mechanism is opposite to the notch; the crankshaft reversing mechanism is arranged right above the communication part of the two step material shifting mechanisms; the tail needle top assembly is arranged at one side of one step material moving mechanism and is positioned at the outer side of the adjacent jacking mechanism; the eccentric shaft clamping assembly is arranged in a pair with the tail needle top assembly; the tail flat top assembly is arranged on one side of the other step material moving mechanism and is positioned on the outer side of the adjacent jacking mechanism; the long shaft clamping assembly is arranged opposite to the tail flat top assembly. The utility model stably conveys the crankshaft to each grinding area, ensures that the crankshaft keeps a stable state in the conveying process, is convenient to take, and simultaneously can turn the crankshaft to conveniently grind different parts of the crankshaft.

Description

Grinding clamping and fixing system

Technical Field

The utility model relates to the field of article clamping and transferring, in particular to a grinding clamping and fixing system.

Background

The surface of the rotating surface of the crankshaft is required to be ground due to the mechanical performance requirement of the crankshaft, so that the surface performance of the crankshaft is ensured to meet the design requirement. The surfaces of the crankshaft that need to be ground include the end shaft and the connecting rod journal, the axes of which are not collinear, and therefore need to be ground in two passes. During grinding, one end of the crankshaft is required to be fixedly rotated, and the other end of the crankshaft is required to be ground, so that the crankshaft grinding process is required to be turned at least once, and meanwhile, the crankshaft cannot be stably conveyed by the conventional conveying device due to the fact that the whole structure of the crankshaft is irregular, so that the crankshaft cannot be accurately clamped when the fixed crankshaft is clamped. In addition, the deviation between the gravity center and the centroid of the crankshaft with shorter overall axial length is larger, and the conventional taking mechanism is easy to tilt and even turn over and fall when taking.

Disclosure of utility model

In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide a grinding clamping and fixing system, which can stably convey a crankshaft to each grinding area, ensure that the crankshaft is kept in a stable state during conveying, and is convenient to take, and simultaneously can turn the crankshaft to conveniently grind different parts of the crankshaft.

The aim of the utility model is realized by the following technical scheme:

An abrasive gripping and securing system, comprising:

The two step material moving mechanisms are arranged in a head-to-tail communication way; the step material moving mechanism is internally provided with a limiting groove matched with the crankshaft for positioning limitation; the middle part of the step material moving mechanism is provided with a through notch;

The two jacking mechanisms are respectively arranged right below the two step material moving mechanisms; the lifting arm of the lifting mechanism is opposite to the notch, and the lifting arm of the lifting mechanism passes through the notch to jack the crank shaft in the step material shifting mechanism;

The crankshaft reversing mechanism is arranged right above the communication part of the two step material shifting mechanisms; the crankshaft reversing mechanism rotates the crankshaft by 180 degrees and then moves the crankshaft from one step material moving mechanism to the other step material moving mechanism;

The tail needle top assembly is arranged at one side of one step material moving mechanism and is positioned at the outer side of the adjacent jacking mechanism;

the eccentric shaft clamping assembly is arranged in a pair with the tail needle top assembly and is positioned at the inner side of the adjacent jacking mechanism;

The tail flat top assembly is arranged on one side of the other step material moving mechanism and is positioned on the outer side of the adjacent jacking mechanism;

the long shaft clamping assembly is arranged opposite to the tail flat top assembly and is positioned at the inner side of the adjacent jacking mechanism.

Further, the step material moving mechanism comprises:

Two step positioning plates are uniformly provided with a plurality of limiting grooves at intervals; the two step positioning plates are arranged in parallel at intervals; a notch is arranged on the step positioning plate;

the cross section of the lifting plate is U-shaped, the opening is upward, and limit grooves are uniformly arranged on two wing plates of the lifting plate at intervals;

the lifting mechanism is vertically upwards arranged;

The reciprocating sliding mechanism is arranged on the lifting end of the lifting mechanism, and the telescopic end of the reciprocating sliding mechanism is fixedly connected with the lower surface of the lifting plate.

Further, the lifting mechanism includes:

the lower fixed plate is positioned below the reciprocating sliding mechanism;

The lifting cylinder is vertically upwards arranged on the lower fixed plate;

The upper fixing plate is arranged on the lifting end of the lifting cylinder;

The upper ends of the two guide posts are fixedly connected with the upper fixing plate, and the lower ends of the two guide posts are movably inserted into the lower fixing plate; the axis of the guide post is parallel to the lifting direction of the off-line cylinder.

Further, a bar-shaped tooth slot is arranged on the cylindrical surface of the lower end of the guide post;

A support rod is arranged on the lower plate surface of the lower fixing plate, and a rotatable synchronous shaft is sleeved in the support rod; gears are arranged at two ends of the synchronous shaft and are respectively meshed with the strip-shaped tooth grooves on the two guide posts.

Further, the reciprocating slide mechanism includes:

The cross beam is arranged on the lower surface of the lifting plate;

The sliding rail parallel to the lifting plate is arranged on the lower surface of the cross beam,

The sliding groove is matched with the sliding rail and is arranged on the upper fixing plate;

The fixed end of the reciprocating cylinder is fixedly connected with the upper fixed plate, the telescopic end of the reciprocating cylinder is fixedly connected with the cross beam, and the telescopic direction of the reciprocating cylinder is parallel to the lifting plate.

Further, the jacking mechanism includes:

a jacking air cylinder which is vertically upwards arranged;

the two jacking plates are vertically upwards arranged at the lifting end of the jacking cylinder;

The two jacking blocks are respectively connected with the two jacking plates, and the top of the two jacking blocks is provided with a notch groove for accommodating the crankshaft; the jacking block penetrates through the notch under the production of the jacking cylinder to lift the crankshaft in the step and feed mechanism.

Further, the crankshaft reversing mechanism includes:

The lifting cylinder is vertically upwards arranged at one side of the communication part of the two step material moving mechanisms;

The mounting plate is fixedly connected with the lifting end of the lifting cylinder;

The swing cylinder is arranged on the lower surface of the mounting plate and is positioned right above the communication position of the two step material moving mechanisms;

the clamping jaw cylinder is arranged at the swinging end of the swinging cylinder, and clamping slots matched with the crankshaft are formed in clamping jaws of the clamping jaw cylinder.

Further, the tail needle top assembly includes:

the horizontal two-shaft sliding assembly is horizontally arranged;

The thin oil cylinder is arranged at the sliding end of the horizontal biaxial sliding component;

the ejector rod is connected with the telescopic end of the thin oil cylinder;

The tail part of the rotary center piece is sleeved in the ejector rod, and is mutually extruded with the inside of the ejector rod through a rectangular spring, and the center part of the rotary center piece is exposed; the telescopic sliding direction of the rotary center piece is collinear with the clamping axis of the eccentric shaft clamping assembly.

Further, the rear flat top module includes:

a tail top cylinder;

The material pressing head is connected with the telescopic end of the tail top cylinder;

The tail top is T-shaped in outline, the tail part is inserted in the material pressing head in a telescopic way, and the head part is opposite to the clamping axis of the long shaft clamping assembly;

the compression spring is sleeved on the outer surface of the tail part of the tail plug, and two ends of the compression spring are respectively propped against the head part of the tail plug and the pressing head.

Further, eccentric nylon blocks are arranged in the step material moving mechanism, and bracket grooves corresponding to the short shaft ends of the crankshafts are uniformly arranged on the upper surfaces of the eccentric nylon blocks at intervals.

Due to the adoption of the technical scheme, the utility model has the following advantages:

1. The two step material moving mechanisms can respectively and independently convey and move the crankshaft before and after the crankshaft rotates, so that the crankshaft can be ensured to move and grind in a streamline manner. The crankshaft is limited by the limiting groove in the moving process, so that sliding displacement cannot occur, deviation cannot occur in the process of taking the crankshaft, and the production line can stably run.

2. The lifting mechanism is synchronously matched with the tail needle top assembly, the crankshaft is positioned and lifted and is placed in the corresponding eccentric shaft clamping assembly, accurate lifting and picking of the crankshaft are achieved, and the crankshaft can be accurately placed in the step and material moving mechanism again after grinding.

3. The crankshaft reversing mechanism rotates the crankshaft, so that different grinding stations can grind different parts of the crankshaft.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.

Drawings

The drawings of the present utility model are described as follows:

Fig. 1 is a schematic front view of the polishing clamping and fixing system in this embodiment.

Fig. 2 is a schematic top view of the polishing clamping and fixing system in this embodiment.

Fig. 3 is an enlarged schematic view of the structure at a in fig. 2.

Fig. 4 is a schematic perspective view of the polishing clamping and fixing system in this embodiment.

Fig. 5 is an enlarged schematic view of the structure at B in fig. 4.

Fig. 6 is an enlarged schematic view of the structure at C in fig. 4.

Fig. 7 is a schematic front view of the step and feed mechanism of the polishing clamp fixing system in this embodiment.

FIG. 8 is a schematic view of the structure of section D-D in FIG. 7.

Fig. 9 is a schematic perspective view of a step and feed mechanism of the polishing clamp fixing system in this embodiment.

Fig. 10 is a schematic perspective view of a lifting mechanism of the polishing clamping and fixing system in this embodiment.

Fig. 11 is a schematic perspective view of a crankshaft reversing mechanism of the grinding clamping and fixing system in this embodiment.

Fig. 12 is a schematic top view of the tail needle top assembly of the polishing clamping fixture system according to this embodiment.

Fig. 13 is a schematic perspective view of a tail needle top assembly of the polishing clamping and fixing system in this embodiment.

Fig. 14 is a schematic top view of a rear flat top module of the polishing clamping and fixing system according to this embodiment.

Fig. 15 is a schematic perspective view of a rear flat top module of the polishing clamping and fixing system according to the present embodiment.

In the figure: 11. a step positioning plate; 12. a notch; 13. a limit groove; 14. a lifting plate; 151. a lower fixing plate; 152. a lifting cylinder; 153. an upper fixing plate; 154. a guide post; 1541. a strip-shaped tooth slot; 155. a support rod; 156. a synchronizing shaft; 157. a gear; 161. a cross beam; 162. a slide rail; 163. a chute; 164. a reciprocating cylinder; 17. an eccentric nylon block; 171. a bracket; 21. jacking the air cylinder; 22. a jacking plate; 23. a jacking block; 231. a notch groove; 31. lifting the cylinder; 32. a mounting plate; 33. a swing cylinder; 34. a clamping jaw cylinder; 35. a clamping jaw; 41. a horizontal two-axis sliding assembly; 42. a thin oil cylinder; 43. a push rod; 44. a rotating center piece; 5. an eccentric shaft clamping assembly; 61. a tail top cylinder; 62. pressing a material head; 63. a tail plug; 64. a compression spring; 7. a long shaft clamping assembly; 8. and (3) a crankshaft.

Detailed Description

The utility model is further described below with reference to the drawings and examples.

Examples:

as shown in fig. 1 to 6, the crankshaft 8 grinding and clamping fixing system includes:

The two step material moving mechanisms are arranged in a head-to-tail communication way; the step material moving mechanism is internally provided with a limiting groove 13 which is matched with the crankshaft 8 and used for limiting positioning; the middle part of the step material moving mechanism is provided with a through notch 12;

The two jacking mechanisms are respectively arranged right below the two step material moving mechanisms; the lifting arm of the lifting mechanism is opposite to the notch 12, and passes through the notch 12 to jack the crankshaft 8 in the step shifting mechanism;

The crankshaft 8 reversing mechanism is arranged right above the communication part of the two step material shifting mechanisms; the crankshaft 8 reversing mechanism rotates the crankshaft 8 by 180 degrees and then moves the crankshaft 8 from one step material moving mechanism to the other step material moving mechanism;

The eccentric shaft clamping assembly 5 is arranged in a pair with the tail needle top assembly and is positioned at the inner side of the adjacent jacking mechanism;

The long shaft clamping assembly 7 is arranged opposite to the tail flat top assembly and is positioned at the inner side of the adjacent jacking mechanism.

As shown in fig. 7, 8 and 9, the step and shift mechanism includes:

Two step positioning plates 11 are uniformly provided with a plurality of limiting grooves 13 at intervals; the two step positioning plates 11 are arranged in parallel at intervals; a notch 12 is arranged on the step positioning plate 11;

The cross section of the lifting plate 14 is U-shaped, the opening is upward, and the two wing plates of the lifting plate 14 are also uniformly provided with spacing grooves 13 at intervals;

the lifting mechanism is vertically upwards arranged;

The reciprocating sliding mechanism is arranged on the lifting end of the lifting mechanism, and the telescopic end of the reciprocating sliding mechanism is fixedly connected with the lower surface of the lifting plate 14.

The lifting mechanism comprises:

A lower fixed plate 151 positioned below the reciprocating sliding mechanism;

A lifting cylinder 152 vertically upward mounted on the lower fixing plate 151;

an upper fixing plate 153 installed on the elevation end of the lift cylinder 152;

Two guide posts 154, the upper ends of which are fixedly connected with the upper fixing plate 153, and the lower ends of which are movably inserted on the lower fixing plate 151; the axis of the guide post 154 is parallel to the lifting direction of the off-line cylinder.

A bar-shaped tooth groove 1541 is arranged on the cylindrical surface of the lower end of the guide post 154;

A support rod 155 is arranged on the lower plate surface of the lower fixing plate 151, and a rotatable synchronizing shaft 156 is sleeved in the support rod 155; gears 157 are arranged at two ends of the synchronizing shaft 156, and the two gears 157 are respectively meshed with the strip-shaped tooth grooves 1541 on the two guide posts 154.

The reciprocating slide mechanism includes:

a beam 161 provided on the lower surface of the lift plate 14;

a slide rail 162 parallel to the lift plate 14 is provided on the lower surface of the cross member 161,

A sliding groove 163 matched with the sliding rail 162, provided on the upper fixing plate 153;

The fixed end of the reciprocating cylinder 164 is fixedly connected with the upper fixing plate 153, the telescopic end of the reciprocating cylinder 164 is fixedly connected with the cross beam 161, and the telescopic direction of the reciprocating cylinder 164 is parallel to the lifting plate 14.

As shown in fig. 10, the jacking mechanism includes:

a jacking cylinder 21 vertically upward disposed;

Two jacking plates 22 vertically upwards arranged on the lifting end of the jacking cylinder 21;

The two jacking blocks 23 are respectively connected with the two jacking plates 22, and the top of the two jacking blocks is provided with a notch groove 231 for accommodating the crankshaft 8; the lifting block 23 passes through the notch 12 under the production of the lifting cylinder 21 to lift the crankshaft 8 in the step and feed mechanism.

As shown in fig. 11, the crankshaft 8 reversing mechanism includes:

The lifting cylinder 31 is vertically upwards arranged at one side of the communication part of the two step material moving mechanisms;

the mounting plate 32 is fixedly connected with the lifting end of the lifting cylinder 31;

The swing cylinder 33 is arranged on the lower surface of the mounting plate 32 and is positioned right above the communication position of the two step material moving mechanisms;

The clamping jaw air cylinder 34 is arranged on the swinging end of the swinging air cylinder 33, and clamping jaws 35 of the clamping jaw air cylinder 34 are provided with clamping grooves matched with the crankshaft 8.

As shown in fig. 12 and 13, the tail needle top assembly includes:

a horizontal biaxial sliding component 41 horizontally arranged;

A thin oil cylinder 42 provided on a sliding end of the horizontal biaxial sliding component 41;

The ejector rod 43 is connected with the telescopic end of the thin oil cylinder 42;

The rotary center piece 44 is sleeved in the ejector rod 43 at the tail part, and the inner part of the ejector rod 43 is mutually extruded through a rectangular spring, and the center part of the rotary center piece is exposed; the telescopic sliding direction of the live center piece 44 is collinear with the clamping axis of the eccentric shaft clamping assembly 5.

As shown in fig. 14 and 15, the tail flat top module includes:

A tail jack cylinder 61;

The material pressing head 62 is connected with the telescopic end of the tail jacking cylinder 61;

The tail top 63 is in a T shape in outline, the tail part is inserted in the material pressing head 62 in a telescopic way, and the head part is opposite to the clamping axis of the long shaft clamping assembly 7;

the compression spring 64 is sleeved on the outer surface of the tail plug 63, and two ends of the compression spring respectively prop against the head of the tail plug 63 and the material pressing head 62.

As shown in fig. 5 and 8, an eccentric nylon block 17 is arranged in the step and feed mechanism, and brackets 171 corresponding to the short shaft end of the crankshaft 8 are uniformly arranged on the upper surface of the eccentric nylon block 17 at intervals.

The grinding, clamping and fixing system for the crankshaft 8 of the present embodiment is operated by sequentially placing the crankshaft 8 into the left step shifting mechanism shown in fig. 1 so that the long axis portion of the crankshaft 8 falls into the limit groove 13 of the step positioning plate 11 and the short axis portion falls into the bracket 171.

The lifting cylinder 152 of the left step and feed mechanism is lifted, the upper fixing plate 153, the reciprocating sliding mechanism and the lifting plate 14 which are connected with the upper fixing plate are lifted, the lifting plate 14 is lifted, the crankshaft 8 positioned in the step positioning plate 11 is lifted into the limit groove 13 of the lifting plate 14, and at the moment, the crankshaft 8 is lifted.

When the upper fixing plate 153 rises, the guide posts 154 slide upwards to drive the synchronous shaft 156 to rotate, so that the upper fixing plate 153 rises stably.

When the upper fixing plate 153 is raised to a certain height, the lifting cylinder 152 is stopped to be raised, the raising height is maintained, and the reciprocating cylinder 164 is controlled to be extended, so that the crankshaft 8 is moved to the right by the interval distance of the limiting groove 13.

After the reciprocating cylinder 164 is moved in place, the lift cylinder 152 is controlled to shorten so that the crankshaft 8 in the lift plate 14 falls into the step positioning plate 11, and the crankshaft 8 is separated from the lift plate 14. At this time, the crankshaft 8 moves rightward by the distance of the limit groove 13.

The above steps are repeated to complete the conveyance of the crankshaft 8.

When the crankshaft 8 is conveyed to the lifting mechanism position, the lifting cylinder 21 is extended, and the lifting block 23 is in contact with the crankshaft 8, and lifts the crankshaft 8 up by a certain height, and maintains the height. The subsequent thin oil cylinder 42 is shortened, the ejector rod 43 is driven to move towards the eccentric shaft clamping assembly 5, the long shaft of the rotary ejector pin ejecting crankshaft 8 slides towards the eccentric shaft clamping assembly 5 in the notch groove 231, and finally the eccentric shaft clamping assembly 5 clamps and fixes the short shaft end of the crankshaft 8.

The eccentric shaft clamping assembly 5 starts to rotate, the rotation axis is the axis of the long shaft of the crankshaft 8, and the thimble of the rotary center piece 44 is always on the axis of the long shaft (the horizontal plane position of the rotary center piece 44 can be adjusted by adjusting the horizontal biaxial sliding assembly 41 to achieve the accuracy). The crankshaft 8 is ground by the rotation of the eccentric shaft clamping assembly 5, and the rotating center piece 44 can ensure that the long shaft does not swing during rotation.

When the long shaft of the crankshaft 8 is ground, the operation is reversed so that the crankshaft 8 falls into the step-and-feed mechanism, the crankshaft 8 is controlled to move rightward, and when the crankshaft 8 comes to the communication position of the two step-and-feed mechanisms.

The clamping jaw air cylinder 34 controls the clamping jaw 35 to open, the lifting air cylinder 31 to shorten, so that the two clamping jaws 35 are positioned on two sides of the crankshaft 8, the clamping jaw air cylinder 34 is controlled to clamp the crankshaft 8, after clamping, the lifting air cylinder 31 is controlled to shorten, the swinging air cylinder 33 is controlled to swing 180 degrees, the crankshaft 8 is moved to the position right above the other step material moving mechanism, at the moment, the clamping operation is reversed, and the crankshaft 8 is placed into the other step material moving mechanism.

The crankshaft 8 continues to move to the right side in the right-side step material moving mechanism, when the crankshaft 8 moves to the tail flat top assembly position, the crankshaft 8 is lifted and is jacked to the long shaft clamping assembly 7 through the tail top cylinder 61 by the operation of lifting the crankshaft 8, and after the long shaft clamping assembly 7 is clamped stably, the tail top 63 is controlled to be far away from the crankshaft 8, and grinding of the short shaft end of the crankshaft 8 is started.

After finishing grinding, putting the crankshaft 8 into the right-side step material shifting mechanism again, and at the moment, completing the operations of conveying, lifting, clamping, grinding, reversing and the like of the crankshaft 8. The crankshaft 8 is produced in a flow line in the whole process, the moving position of the crankshaft 8 is fixed accurately, and the production stability is high.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present utility model, which is intended to be covered by the claims of the present utility model.

Claims

1. The grinding clamp fixing system is characterized by comprising:

2. The grinding gripping fixture system of claim 1, wherein the step feed mechanism comprises:

the lifting mechanism is vertically upwards arranged;

3. The abrasive clamp fixation system of claim 2, wherein the lifting mechanism comprises:

the lower fixed plate is positioned below the reciprocating sliding mechanism;

The lifting cylinder is vertically upwards arranged on the lower fixed plate;

The upper fixing plate is arranged on the lifting end of the lifting cylinder;

4. The grinding clamping and fixing system according to claim 3, wherein a bar-shaped tooth slot is formed on the cylindrical surface of the lower end of the guide post;

5. The abrasive clamp fixation system of claim 2, wherein the reciprocating slide mechanism comprises:

The cross beam is arranged on the lower surface of the lifting plate;

6. The grinding gripping and holding system of claim 1, wherein the jacking mechanism comprises:

a jacking air cylinder which is vertically upwards arranged;

7. The grinding gripping and securing system of claim 1, wherein the crankshaft reversing mechanism comprises:

8. The grinding clamp fixture system of claim 1, wherein the tail needle top assembly comprises:

the horizontal two-shaft sliding assembly is horizontally arranged;

the ejector rod is connected with the telescopic end of the thin oil cylinder;

9. The abrasive gripping and securing system according to claim 1, wherein the trailing top module comprises:

a tail top cylinder;

10. The grinding clamping and fixing system according to claim 1, wherein eccentric nylon blocks are arranged in the step and feed mechanism, and brackets corresponding to the short shaft ends of the crankshafts are uniformly arranged on the upper surfaces of the eccentric nylon blocks at intervals.